diff --git a/google_tag.module b/google_tag.module
index bec1c24..24f2448 100644
--- a/google_tag.module
+++ b/google_tag.module
@@ -231,7 +231,7 @@ function _google_tag_path_check() {
   if (!isset($satisfied)) {
     $config = \Drupal::config('google_tag.settings');
     $toggle = $config->get('path_toggle');
-    $paths = Unicode::strtolower($config->get('path_list'));
+    $paths = mb_strtolower($config->get('path_list'));
 
     if (empty($paths)) {
       $satisfied = ($toggle == GOOGLE_TAG_EXCLUDE_LISTED);
@@ -239,12 +239,12 @@ function _google_tag_path_check() {
     else {
       $request = \Drupal::request();
       $current_path = \Drupal::service('path.current');
-      $alias_manager = \Drupal::service('path.alias_manager');
+      $alias_manager = \Drupal::service('path_alias.manager');
       $path_matcher = \Drupal::service('path.matcher');
       // @todo Are not some paths case sensitive???
       // Compare the lowercase path alias (if any) and internal path.
       $path = rtrim($current_path->getPath($request), '/');
-      $path_alias = Unicode::strtolower($alias_manager->getAliasByPath($path));
+      $path_alias = mb_strtolower($alias_manager->getAliasByPath($path));
       $satisfied = $path_matcher->matchPath($path_alias, $paths) || (($path != $path_alias) && $path_matcher->matchPath($path, $paths));
       $satisfied = ($toggle == GOOGLE_TAG_EXCLUDE_LISTED) ? !$satisfied : $satisfied;
     }